CVE-2026-45682 MEDIUM

CVE-2026-45682: OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals

Vendor Open-Telemetry
Product opentelemetry-ebpf-instrumentation
Weakness CWE-401
Published June 2, 2026
Last update June 2, 2026

CVSS base score

5.1/10
Attack vector Local
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the custom CappedConcurrentHashMap introduced for Java TLS state tracking never removes keys from its insertion-order queue when entries are deleted. In long-running instrumented JVMs, repeated connection churn can therefore grow the queue without bound and exhaust heap memory. This issue has been patched in version 0.9.0.

Key dates

02Disclosure timeline

June 2, 2026 CVE published
June 2, 2026 Record updated